* config/mips/mips.h (processor_type): Add new PROCESSOR_4KP

name.
* config/mips/mips.c: Add 4km alias.
* config/mips/mips.md: Add 4kp to cpu attrib and include 4k.md.
* config/mips/4k.md: New file, add 4Kc/4Kp DFA pipeline
description.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@99664 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 03261dc..6082e74 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,12 @@
+2005-05-13  David Ung  <davidu@mips.com>
+
+       * config/mips/mips.h (processor_type): Add new PROCESSOR_4KP
+       name.
+       * config/mips/mips.c: Add 4km alias.
+       * config/mips/mips.md: Add 4kp to cpu attrib and include 4k.md.
+       * config/mips/4k.md: New file, add 4Kc/4Kp DFA pipeline
+       description.
+
 2005-05-13  Jan Hubicka  <jh@suse.cz>
 
        * c-decl.c (finish_function): Suppress "control reaches end of

diff --git a/gcc/config/mips/4k.md b/gcc/config/mips/4k.md
new file mode 100644 (file)
index 0000000..a580c9e
--- /dev/null
+++ b/gcc/config/mips/4k.md
@@ -0,0 +1,154 @@
+;; DFA-based pipeline descriptions for MIPS32 4K processor family
+;; Contributed by Nigel Stephens (nigel@mips.com)
+;;   and David Ung (davidu@mips.com)
+;;
+;; References:
+;;   "MIPS32 4K Processor Core Family Software User's Manual,
+;;     Doc no: MD00016, Rev 1.18, Nov 15, 2004."
+;;
+;; 4Kc - pipelined multiplier and translation lookaside buffer (TLB)
+;; 4km - pipelined multiplier and block address translator (BAT)
+;; 4kp - non-pipelined multiplier and block address translator (BAT)
+;;
+;; Copyright (C) 2005 Free Software Foundation, Inc.
+;;
+;; This file is part of GCC.
+;;
+;; GCC is free software; you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published
+;; by the Free Software Foundation; either version 2, or (at your
+;; option) any later version.
+
+;; GCC is distributed in the hope that it will be useful, but WITHOUT
+;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+;; or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
+;; License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GCC; see the file COPYING.  If not, write to the
+;; Free Software Foundation, 59 Temple Place - Suite 330, Boston,
+;; MA 02111-1307, USA.
+
+(define_automaton "r4k_cpu, r4k_mdu")
+
+;; Integer execution unit.
+(define_cpu_unit "r4k_ixu_arith"       "r4k_cpu")
+(define_cpu_unit "r4k_ixu_mpydiv"      "r4k_mdu")
+
+(define_insn_reservation "r4k_int_load" 2
+  (and (eq_attr "cpu" "4kc,4kp")
+       (eq_attr "type" "load"))
+  "r4k_ixu_arith")
+
+(define_insn_reservation "r4k_int_prefetch" 1
+  (and (eq_attr "cpu" "4kc,4kp")
+       (eq_attr "type" "prefetch"))
+  "r4k_ixu_arith")
+
+(define_insn_reservation "r4k_int_store" 1
+  (and (eq_attr "cpu" "4kc,4kp")
+       (eq_attr "type" "store"))
+  "r4k_ixu_arith")
+
+;; 4Kc/4Km 
+;; unsigned divide - 8/16/24/32 bit operand have latencies  9/17/25/33
+;;   signed divide - 8/16/24/32 bit operand have latencies 10/18/26/34
+(define_insn_reservation "r4k_idiv_4kc" 34
+  (and (eq_attr "cpu" "4kc")
+       (and (eq_attr "type" "idiv")
+           (eq_attr "mode" "!DI")))
+  "r4k_ixu_arith+(r4k_ixu_mpydiv*34)")
+
+;; 4Kp
+;; unsigned divide - 33
+;;   signed divide - 33-35
+(define_insn_reservation "r4k_idiv_4kp" 35
+  (and (eq_attr "cpu" "4kp")
+       (and (eq_attr "type" "idiv")
+           (eq_attr "mode" "!DI")))
+  "r4k_ixu_arith+(r4k_ixu_mpydiv*35)")
+
+;; 4Kc/4Km fast 32x32 multiply
+;; 16x32 is faster, but there's no way to detect this
+(define_insn_reservation "r4k_mult_4kc" 2
+  (and (eq_attr "cpu" "4kc")
+       (and (eq_attr "type" "imul,imadd")
+           (eq_attr "mode" "SI")))
+  "r4k_ixu_arith+(r4k_ixu_mpydiv*2)")
+
+;; 4Kc/4Km MUL has 2 cycle latency, but has the special property that it will
+;; stall the integer unit pipeline. MUL 16x16 or 32x16 forces 1 cycle stall,
+;; while MUL 32x32 forces 2 cycle stall.  If next insn use the result, an
+;; additional stall is forced.
+(define_insn_reservation "r4k_mul_4kc" 4
+  (and (eq_attr "cpu" "4kc")
+       (and (eq_attr "type" "imul3")
+           (eq_attr "mode" "SI")))
+  "(r4k_ixu_arith+r4k_ixu_mpydiv)*3")
+
+;; 4Kp slow iterative 2-op MULT
+;; Latency of 32 if next insn is MADD/MSUB,MFHI/MFLO.
+;; Repeat rate of 33 cycles.
+(define_insn_reservation "r4k_mult_4kp" 32
+  (and (eq_attr "cpu" "4kp")
+       (and (eq_attr "type" "imul")
+           (eq_attr "mode" "SI")))
+  "r4k_ixu_arith+(r4k_ixu_mpydiv*32)")
+
+;; 4Kp slow iterative 3-op MUL
+;; Latency of 32 cycles, but stalls the whole pipeline until complete.
+(define_insn_reservation "r4k_mul_4kp" 32
+  (and (eq_attr "cpu" "4kp")
+       (and (eq_attr "type" "imul3")
+           (eq_attr "mode" "SI")))
+  "(r4k_ixu_arith+r4k_ixu_mpydiv)*32")
+
+;; 4Kp slow iterative MADD
+;; Latency of 34 if next use insn is MADD/MSUB,MFHI/MFLO.
+;; Repeat rate of 35 cycles.
+(define_insn_reservation "r4k_madd_4kp" 34
+  (and (eq_attr "cpu" "4kp")
+       (and (eq_attr "type" "imadd")
+           (eq_attr "mode" "SI")))
+  "r4k_ixu_arith+(r4k_ixu_mpydiv*34)")
+
+;; Move to HI/LO -> MADD/MSUB,MFHI/MFLO has a 1 cycle latency.
+(define_insn_reservation "r4k_int_mthilo" 1
+  (and (eq_attr "cpu" "4kc,4kp")
+       (eq_attr "type" "mthilo"))
+  "r4k_ixu_arith+r4k_ixu_mpydiv")
+
+;; Move from HI/LO -> integer operation has a 2 cycle latency.
+(define_insn_reservation "r4k_int_mfhilo" 2
+  (and (eq_attr "cpu" "4kc,4kp")
+       (eq_attr "type" "mfhilo"))
+  "r4k_ixu_arith+r4k_ixu_mpydiv")
+
+;; All other integer insns.
+(define_insn_reservation "r4k_int_alu" 1
+  (and (eq_attr "cpu" "4kc,4kp")
+       (eq_attr "type" "arith,condmove,shift,const,nop,slt"))
+  "r4k_ixu_arith")
+
+(define_insn_reservation "r4k_int_branch" 1
+  (and (eq_attr "cpu" "4kc,4kp")
+       (eq_attr "type" "branch"))
+  "r4k_ixu_arith")
+
+(define_insn_reservation "r4k_int_jump_4k" 1
+  (and (eq_attr "cpu" "4kc,4kp")
+       (eq_attr "type" "jump,call"))
+  "r4k_ixu_arith")
+
+;; mfcx/mtcx - non FPU
+;; (Disabled until we add cop0 support)
+;; (define_insn_reservation "r4k_int_cop" 2
+;;   (and (eq_attr "cpu" "4kc,4kp")
+;;      (eq_attr "type" "cop0"))
+;;  "r4k_ixu_arith")
+
+;; Unknown or multi - single issue
+(define_insn_reservation "r4k_unknown" 1
+  (and (eq_attr "cpu" "4kc,4kp")
+       (eq_attr "type" "unknown,multi"))
+  "r4k_ixu_arith+r4k_ixu_mpydiv")

diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c
index 622f704..9faddde 100644 (file)
--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
@@ -695,7 +695,8 @@ const struct mips_cpu_info mips_cpu_info_table[] = {
 
   /* MIPS32 */
   { "4kc", PROCESSOR_4KC, 32 },
-  { "4kp", PROCESSOR_4KC, 32 }, /* = 4kc */
+  { "4km", PROCESSOR_4KC, 32 }, /* = 4kc */
+  { "4kp", PROCESSOR_4KP, 32 },
 
   /* MIPS32 Release 2 */
   { "m4k", PROCESSOR_M4K, 33 },

diff --git a/gcc/config/mips/mips.h b/gcc/config/mips/mips.h
index 91a3b0b..aeadac3 100644 (file)
--- a/gcc/config/mips/mips.h
+++ b/gcc/config/mips/mips.h
@@ -34,6 +34,7 @@ Boston, MA 02111-1307, USA.  */
 enum processor_type {
   PROCESSOR_DEFAULT,
   PROCESSOR_4KC,
+  PROCESSOR_4KP,
   PROCESSOR_5KC,
   PROCESSOR_20KC,
   PROCESSOR_24K,

diff --git a/gcc/config/mips/mips.md b/gcc/config/mips/mips.md
index 1473f55..5d58b73 100644 (file)
--- a/gcc/config/mips/mips.md
+++ b/gcc/config/mips/mips.md
@@ -266,7 +266,7 @@
 ;; Attribute describing the processor.  This attribute must match exactly
 ;; with the processor_type enumeration in mips.h.
 (define_attr "cpu"
-  "default,4kc,5kc,20kc,24k,24kx,m4k,r3000,r3900,r6000,r4000,r4100,r4111,r4120,r4130,r4300,r4600,r4650,r5000,r5400,r5500,r7000,r8000,r9000,sb1,sr71000"
+  "default,4kc,4kp,5kc,20kc,24k,24kx,m4k,r3000,r3900,r6000,r4000,r4100,r4111,r4120,r4130,r4300,r4600,r4650,r5000,r5400,r5500,r7000,r8000,r9000,sb1,sr71000"
   (const (symbol_ref "mips_tune")))
 
 ;; The type of hardware hazard associated with this instruction.
@@ -500,6 +500,7 @@
 (define_cpu_unit "alu" "alu")
 (define_cpu_unit "imuldiv" "imuldiv")
 
+(include "4k.md")
 (include "24k.md")
 (include "3000.md")
 (include "4000.md")